The lack of expandable storage in Nexus devices becomes one of the hottest and most controversial topics every time Google does a refresh and we find out that the next generation lacks SD cards entirely yet again. Couple that with the decision to limit onboard storage options to 16GB max, which is the case with the Nexus 4 at the moment and was the case with the Nexus 7 for a while, and you've got a full-blown revolt.